12126851 divided by 630 
The aim is to understand the frequency of 630 in 12126851.

Advancing to step 1:
1 divided by 630 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (2) from the dividend to 1 and continue with: 12 / 630

Moving on to step 2:
630 goes into 12 0 times with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 12, we end up with 12.
Append the next digit (1) from the dividend to 12 and continue with: 121 / 630

On to step 3:
630 can be fit into 121 0 times, resulting in a remainder of 121.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 121 to get 121.
Include the next digit (2) from the dividend after 121, then repeat: 1212 / 630

Moving on to step 4:
If we divide 1212 by 630, we get 1 and a remainder of 582.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtracting 630 from 1212 leaves us with 582.
Append the next digit (6) from the dividend to 582 and continue with: 5826 / 630

Going ahead to step 5:
630 goes into 5826 9 times with a remainder of 156.
The next digit of our result is 9. 
Result so far: 19.0
Deduct 5670 from 5826 and we're left with 156.
Fetch the next digit (8) from the dividend, attach it to 156 and continue: 1568 / 630

On to step 6:
630 can be fit into 1568 2 times, resulting in a remainder of 308.
Write down 2 as next digit of the result. 
Result so far: 192.0
Subtract 1260 from 1568 to get 308.
Include the next digit (5) from the dividend after 308, then repeat: 3085 / 630

Moving on to step 7:
The number 630 fits into 3085 4 times, leaving a remainder of 565.
Record the quotient 4 as the next digit in the result. 
Result so far: 1924.0
If we take 2520 away from 3085, we end up with 565.
Include the next digit (1) from the dividend after 565, then repeat: 5651 / 630

Advancing to step 8:
When dividing 5651 by 630, we get 8 with a remainder of 611.
Put 8 as the next digit of the answer. 
Result so far: 19248.0
Subtracting 5040 from 5651 leaves us with 611.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6110, and continue the process.

Advancing to step 9:
6110 divided by 630 is 9 with a remainder of 440.
The number 9 becomes the next digit in our result. 
Result so far: 19248.9
If we take 5670 away from 6110, we end up with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Moving on to step 10:
When dividing 4400 by 630, we get 6 with a remainder of 620.
Use 6 as the next digit of our solution. 
Result so far: 19248.96
If we take 3780 away from 4400, we end up with 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

On to step 11:
630 can be fit into 6200 9 times, resulting in a remainder of 530.
Write down 9 as next digit of the result. 
Result so far: 19248.969
Subtracting 5670 from 6200 leaves us with 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5300, and continue the process.

Advancing to step 12:
630 can be fit into 5300 8 times, resulting in a remainder of 260.
Put 8 as the next digit of the answer. 
Result so far: 19248.9698
Subtract 5040 from 5300 to get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Moving on to step 13:
2600 divided by 630 is 4 with a remainder of 80.
Put 4 as the next digit of the answer. 
Result so far: 19248.96984
If we subtract 2520 from 2600, we get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 14:
630 can be fit into 800 1 times, resulting in a remainder of 170.
The number 1 becomes the next digit in our result. 
Result so far: 19248.969841
If we subtract 630 from 800, we get 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Step 15:
630 can be fit into 1700 2 times, resulting in a remainder of 440.
The next digit of our result is 2. 
Result so far: 19248.9698412
Subtracting 1260 from 1700 leaves us with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

Moving on to step 16:
If we divide 4400 by 630, we get 6 and a remainder of 620.
Write down 6 as next digit of the result. 
Result so far: 19248.96984126
Deduct 3780 from 4400 and we're left with 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6200, and continue the process.

Our division results in 19248.96984126 with a remaining 6.2e-07.